Flange-cutting machine.



G. L. FINGH.

FLANGE CUTTING- MAUHINE. APPLIOATION FILED 11017.14, 1907.

91 2,238. Patented Feb. 9, 1909.

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G. I". FINGH.

FLANGE CUTTING MACHINE. APPLICATION IILED 190114, 1907.

912,238. Patented Feb. 9,1909.

3 SHEETS-SHEET 2.

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0. L. FINGH. FLANGE GUTTING MACHINE.

APPLIUATION FILED NOV. 14, V1907.

912,238, Patehted Feb. 9, 1909.

3 SHEETS-SHEET 3.

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UNITED STATES PATENT OFFICE.

CLARENCE L. FINOH, OF ROCHESTER, NEW YORK, ASSIGNOR TO THE PFAUDLERCOMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

FLANGE-CUTTING MACHINE.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Original application filed September 13, 1907, Serial No. 392,627.Divided and. this application filed November 14, 1907.

Serial No, 402,090.

To all whom it may concern:

Be it known that I, CLARENCE L. FINCH, of Rochester, in the county ofMonroe and State of New York, have invented certain new and usefulImprovements in Flange- Cutting Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thisspecification, and to the reference-numerals marked thereon.

The present invention which has been divided from an application filedby me on September 13th, 1907. Serial No. 392,627, on a hanging machine,relates to a machine for cutting or trimming flanges on cylindricalbodies, and it has for an object to provide a construction which willrender unnecessary the hand trimming of flanges formed on large vats ortanks built up of sections.

To these and other ends the invention consists in certain improvementsand combinations of parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the drawings: Figure 1 represents a front elevation of a machineconstructed in accordance with this invention; Fig. 2 represents ahorizontal section of the chuck or holder, the cutting device beingshown in plan; Fig. 3 represents a horizontal section of the machineadjusted to cut smaller bands or sections; and Fig. 4 represents adetail plan view of another cutting device constructed in accordancewith this invention.

In the manufacture of large vats or tanks formed of sections, it iscustomary first to provide a ring shaped section with flanges at itsopposite ends and then to unite these flanges to flanges on othersections. As it is impossible to form flanges having the same width, theflanges have to be trimmed and this has been done by a hand tool, afterthe sections have been riveted together, which not only consumes a greatdeal of time to complete the operation, but produces an uneven edge andrequires the handling of the entire vat. I/Vith this invention thetrimming of flanges on cylindrical bodies cannot only be done in a muchshorter time, both flanges on each section being cut simultaneously andunnecessary handling being dispensed with, but the edges formed aresmoother and the width of the flanges is more regular.

In the embodiment of the invention herein shown there is employed a bedplate 1 on which preferably are arranged supports 2 on the upperportions of which is journaled a shaft or spindle 3 which carries thechuck or rotary eXpansible holder. The chuck is formed preferably byarranging at one end of the shaft 3 a head at, the outer face of whichhas a plurality of jaws movable thereon, be-

ing for this purpose formed with radial guides 6 on which move slides 7,to which the jaws 5 are secured by bolts 8, permitting their removal andthe attachment of other jaws 5 of different length as shown in Fig. 3.All of the jaws have their outer faces curved near both edges at 5 sothat when the chuck is expanded they will lie flush against the innersurface of the band, ring, section or the like.

The expansion or movement of the jaws is effected by any suitable means,but it is preferred to connect them by links 9 to aplunger 10, the linksbeing united to the plunger by two disks 11 and 12 arranged between aflange 13 and a nut 14 on the plunger and receiving pivots 15 integralwith the links. The plunger is mounted in the shaft 3 which for thispurpose is made hollow, while to the outer end of the shaft is secured afluid pressure cylinder 16 which rotates with the shaft and has itspiston 17 connected to the plunger 10.

In order to rotate the chuck or holder, it is preferred to employ aninternal gear 18 integral with the inner face of the head 4 and having adrive shaft 19 geared thereto by a pinion 20, said shaft 19 being alsojournaled on the supports 2.

The cutting devices preferably two in number, one for each flange, maybe mounted on the bed plate, to one side of and at each end of therotary eXpansible holder, so as to operate in a plane parallel to theaxis of the holder, and for this purpose there may be provided for eacha support 21 roughly adjustable for different sizes of bands, to andfrom the chuck, or in a direction transverse to the axis of the rotaryholder, on the bed plate by bolts 22 working in slots 22 in the said bedplate, or other means; and having a carrier 23 adjustable on the supportto and from the chuck after each cutting operation,

the adjustment being preferably eliected by a screw shaft 24 which isjournaled on the support and engages a nut on the carrier. The cuttingdevice may comprise two roller cutters 25 movable toward and from eachother in the direction of the axis of the holder and preferably mountedon the free ends of two arms 26 pivoted on the carrier to turn about asingle axis 27. lhe rollers may be forced together slowly by asuital'ile device, as for instance, a yolro pivoted at 29 to one of thearms, and carrying; a belt or set screw 30 which engages the otherInstead of roller cutters operating same plane as in Figs. 1 to 3, I mayemploy two cutters and 25 operating in pro mate planes as shown in 4i,the cutter 25 being cylindrical in form and the cutter 25 beingfrusto-conical. 'lhe cylindri al cutter lies against the out ace of th 5to support the latter du ing the which is effected by the edges of thetwo rollers.

In Fig. 3 the machine is shown supplied with jaws 5 which do not extendbeyond the head 4, and with this arrangement only one flange is trimmedby each cutting operation.

In operation the expansible h r having a flanged band or ring thereon isrotated, the cutting devices being first adjusted so that they engageopposite sides of the r After every revolution of the holder, the cuttors are advanced slightly until the metal is completely cut.

An apparatus constructed in accordance with this invention does awaywith the hand trimming of the joints between the sections of large vatsor tanks and permits work to be done quicker, with greater accuracy andneatness and withless trouble in handling the tank.

I claim as my invention:

1. In a flange cutting machine, the combination with a rotary holderhaving radially movable jaws and mechanism for rotating it, of a pair ofroller cutters operating or cutting in a plane parallel to the axis ofthe holder and a device for moving the cutters toward each other in thesame plane.

2. Ina flange cutting machine, the combi nation with a rotary holderhaving radially movable jaws and mechanism for rotating it, of a cuttingdevice mounted to cut or operate in a plane parallel to the axis of theholder, means for effecting the adjustment of the cuttidevice in thesame plane to effect the cutting, and a device for adjusting the cuttingdevice in a direction transverse to the axis of the holder toaccommodate the cutting device to bands oi dil orent diameters.

in a flange cutting machine, the combination with a rotary expansibleholder, of a bed plate, a support on the bed plate, adjust able towardand from the holder, a carrier on the support adjus""ble toward and fromthe holder, and a pair of cutters movable toward and from each other onthe carrier to t 1nd on the rotary expansihle holder.

pair of suitably supported pivoted levers,

roller cutters carried by the levers and-a device for moving the leverstoward each other to cause them to cut a flange on'a deviceon theholder.

6. in a nation wit a rotary expansible holder, of a pair of suitablysupported pivoted levers, roller cutters carried by the levers, a yokepivoted at its free ends to one of the lovers, nd a set screw carried bythe yoke to move the rollers toward each other in order to cut a on adevice carried b holder.

7. In a flange cutting machine, the combination with a rotary expansibleholder, of a support located to one side of the holder, a

carrier ustable on the support toward and CLARENCE L. FINCl-l.

in a fian e cuttine' machine the combi-' ange cutting machine, thecombiv the rotary

